Method for simultaneously welding and forming column on plate

Abstract

The invention discloses a method for simultaneously achieving welding and forming of column bodies on a plate. A stirring friction backfill spot welding tool is adopted for simultaneously welding original columns on the plate body and forming the column bodies of different shapes and heights. High-strength and efficient connection and forming of the column plates can be achieved, new column bodies with different shapes and axial sizes can be obtained through one original column, additional machining is not needed, and therefore the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a method for simultaneously realizing the welding and forming of columns on a plate. Background Art

[0002] Aluminum plates are widely used in yachts and chariots, and other structures often need to be connected or installed on them. It is necessary to connect aluminum columns and other structures on the aluminum plates as a medium between the aluminum plates and the structures on them. Aluminum columns sometimes need to be solid and sometimes need to be hollow.

[0003] In order to achieve the connection between the aluminum column and the aluminum plate, the fusion welding method is often used, such as non-metallic gas shielded welding (TIG) and metal metal shielded welding (MIG), etc., to weld a full circle of the corner weld between the column and the plate; or the friction welding method is used to generate heat through friction between the aluminum column and the aluminum plate and squeeze out the liquid metal to achieve a high-strength connection, but this method requires subsequent processing steps to remove the extruded aluminum flash. Whether the aluminum column obtained by the above two connection methods is solid or hollow depends on the shape and structure of the original aluminum column itself, and there is no additional effect of changing the appearance.

[0004] Friction stir welding is a solid phase welding method suitable for lightweight metal high-strength connection. The friction stir backfill spot welding technology derived from it uses the synchronous rotation and independent up and down movement of the stirring needle and stirring sleeve to achieve a point-like keyhole-free connection between plates. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for simultaneously realizing the welding and forming of a column on a plate, which can realize high-strength and high-efficiency connection and forming of a column plate, and can obtain new columns of different shapes and axial sizes from an original column without the need for additional machining, thereby reducing production costs.

[0006] According to the method for simultaneously welding and forming columns on a plate in an embodiment of the present invention, a friction stir backfill spot welding tool is used to simultaneously weld the original columns on the plate and form columns of different shapes and heights.

[0007] Wherein, the original column and the plate body are both made of metal, such as aluminum and aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, etc. The friction stir backfill spot welding tool comprises the stirring needle, the stirring sleeve and the pressing sleeve which are coaxially arranged from inside to outside.

[0008] The method for simultaneously realizing the welding and forming of the column on the plate in the embodiment of the present invention adopts the working principle of the stir friction backfill spot welding tool: the clamping sleeve does not rotate, and the plate body is clamped by the clamping sleeve, and the original column is confined in the clamping sleeve; then the stirring needle and the stirring sleeve are rotated to press on the original column and move axially in the reverse direction, so that the stirring needle or the stirring sleeve enters the plate body, breaks the interface between the original column and the plate body, realizes the column-plate welding, and then the stirring needle and the stirring sleeve are moved axially in the reverse direction until the stirring needle and the stirring sleeve stay at their respective predetermined final stop positions, wherein the respective predetermined final stop positions of the stirring needle and the stirring sleeve are determined by the different shapes and axial dimensions of the column, so that the columns of different shapes and heights can be correspondingly formed according to the different needs of the column, such as a solid column and a column with holes can be formed.

[0009] The method for simultaneously welding and forming a column on a plate in an embodiment of the present invention uses a stir friction backfill spot welding tool to simultaneously weld the original column on the plate and form the column into columns of different shapes and heights, wherein the principle of stir friction backfill spot welding is used to achieve column-plate connection and column forming, and columns of different shapes and axial sizes, such as solid columns or columns with holes, can be obtained as needed. This method can not only achieve high-strength and high-efficiency connection and forming of column plates, but also can obtain new columns of different shapes and axial sizes through one original column, without the need for additional machining, thereby reducing production costs.

[0010] In some embodiments, the friction stir backfill spot welding tool comprises a stirring needle, a stirring sleeve and a pressing sleeve coaxially arranged from inside to outside;

[0011] The method comprises the following steps:

[0012] S1: placing the original column on the plate;

[0013] S2: The non-rotating pressing sleeve is sleeved on the outer circumference of the original column and axially pressed on the plate body, so that the rotating stirring needle and the rotating stirring sleeve are axially pressed on the end surface of the original column;

[0014] S3: making the rotating stirring needle and the rotating stirring sleeve move in opposite directions along the axial direction to break the interface between the original column and the plate body, thereby completing the column-plate welding;

[0015] S4: After the column plate welding is completed, the rotating stirring needle and the rotating stirring sleeve are moved in opposite directions along the axial direction to form the required column;

[0016] S5: Separate the friction stir backfill spot welding tool from the plate and the column.

[0017] In some embodiments, the outer diameter of the original column is larger than the outer diameter of the stirring needle and smaller than the inner diameter of the compression sleeve.

[0018] In some embodiments, in steps S2 to S4, the stirring needle and the stirring sleeve rotate at the same speed or at a different speed, and the stirring needle and the stirring sleeve rotate in the same direction or in opposite directions.

[0019] In some embodiments, in step S3 or / and step S4, the axial moving speed of the stirring needle and the axial moving speed of the stirring sleeve satisfy the following relationship:

[0020] V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ;

[0021] Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle and the axial moving speed of the stirring sleeve, respectively. 搅拌套 and S 搅拌针 They are respectively the area of ​​the annular ring of the stirring end surface of the stirring sleeve and the circular area of ​​the stirring end surface of the stirring needle.

[0022] In some embodiments, step S3 includes a first welding motion mode and / or a second welding motion mode;

[0023] The first welding motion mode is as follows: first, the stirring needle moves forward in the axial direction, and the stirring sleeve moves back in the axial direction until the stirring needle enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle moves back in the axial direction, and the stirring sleeve moves forward in the axial direction until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding;

[0024] The second welding movement mode is: first, the stirring needle retracts axially, and at the same time the stirring sleeve advances axially until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle advances axially, and at the same time the stirring sleeve retracts axially, until the stirring needle enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding.

[0025] In some embodiments, step S4 includes a first forming motion mode and / or a second forming motion mode;

[0026] Wherein, the first forming motion mode is: first, the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction; then, the stirring needle retreats in the axial direction, and the stirring sleeve advances in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the desired column; or, the first forming motion mode is: the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the desired column;

[0027] The second molding motion mode is: first, the stirring sleeve advances axially, and the stirring needle retreats axially; then, the stirring sleeve retreats axially, and the stirring needle advances axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column; or the second molding motion mode is: the stirring sleeve advances axially, and the stirring needle retreats axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column.

[0028] In some embodiments, in step S4, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve are determined by the shape and axial size of the cylinder.

[0029] In some embodiments, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve may be flush or not flush.

[0030] In some embodiments, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a solid cylinder; when the predetermined final stop position of the stirring end surface of the stirring needle is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a column with holes.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1a A side view schematic diagram of the pre-welding preparation in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0034] Figure 1b A three-dimensional schematic diagram of the pre-welding preparation in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0035] Figure 2 It is a schematic diagram of the welding tool being pressed firmly on the original column and the plate in the method for simultaneously realizing the welding and forming of the column on the plate of the present invention;

[0036] Figure 3a A schematic diagram of a welding step in a welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0037] Figure 3b A schematic diagram of another welding step in a welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0038] Figure 3c A schematic diagram of a welding step in another welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0039] Figure 3d A schematic diagram of another welding step in another welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate of the present invention;

[0040] Figure 4a A schematic diagram of a forming step in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0041] Figure 4b A schematic diagram of a forming step in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0042] Figure 5a A schematic diagram of the withdrawal of the welding tool in the method for simultaneously achieving the welding and forming of the column on the plate of the present invention;

[0043] Figure 5b Another schematic diagram of the withdrawal of the welding tool in the method for simultaneously achieving the welding and forming of the column on the plate of the present invention;

[0044] Figure 6a A schematic diagram of a welded and formed product obtained by using the method of the present invention for simultaneously achieving welding and forming of columns on a plate;

[0045] Figure 6b This is a schematic diagram of another welded and formed product obtained by using the method of the present invention to simultaneously achieve welding and forming of columns on a plate.

[0046] Reference numerals:

[0047] The original column 10; the plate body 20; the column body 30; the stirring needle 40; the stirring sleeve 50; and the pressing sleeve 60. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] Combine the following Figures 1a to 6b The method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention is described.

[0050] According to the method for simultaneously realizing the welding and forming of the column on the plate according to the embodiment of the present invention, Figures 1a to 6b As shown, the original column 10 is welded on the plate 20 by using a stir friction backfill spot welding tool to form columns 30 of different shapes and heights.

[0051] The original column 10 and the plate body 20 are both made of metal, such as aluminum and aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, etc. The friction stir backfill spot welding tool comprises a stirring pin 40, a stirring sleeve 50 and a pressing sleeve 60 which are coaxially arranged from inside to outside.

[0052] The method for simultaneously realizing the welding and forming of the column on the plate in the embodiment of the present invention adopts the working principle of the stir friction backfill spot welding tool: the clamping sleeve 60 does not rotate, and the plate body 20 is pressed by the clamping sleeve 60, and the original column 10 is confined in the clamping sleeve 60; then the stirring needle 40 and the stirring sleeve 50 are rotated to press on the original column 10 and move axially in the reverse direction, so that the stirring needle 40 or the stirring sleeve 50 enters the plate body 20, breaks the interface between the original column 10 and the plate body 20, and realizes the column-plate welding, and then the stirring needle 40 and the stirring sleeve 50 are moved axially in the reverse direction until the stirring needle 40 and the stirring sleeve 50 stay at their respective predetermined final stop positions, wherein the respective predetermined final stop positions of the stirring needle 40 and the stirring sleeve 50 are determined by the different shapes and axial dimensions of the column 30, so that columns 30 of different shapes and heights can be formed according to the different needs of the column 30, such as a solid column (such as Figure 5a and Figure 6a ) and columns with holes (such as Figure 5b and Figure 6b ).

[0053] The method for simultaneously realizing the welding and forming of the column on the plate in the embodiment of the present invention uses a stir friction backfill spot welding tool to simultaneously weld the original column 10 on the plate 20 and form the column 30 into columns of different shapes and heights, wherein the principle of stir friction backfill spot welding is used to realize the connection of the column plate and realize the forming of the column 30, and the column 30 of different shapes and axial sizes can be obtained as needed, such as a solid column or a column with holes. This method can not only realize the high-strength and high-efficiency connection and forming of the column plate, but also can obtain the column 30 of different shapes and axial sizes through a single original column 10, without the need for additional machining, thereby reducing the production cost.

[0054] Combine the following Figures 1a to 6b The method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention will be specifically described.

[0055] In an embodiment of the present invention, the friction stir backfill spot welding tool includes a stirring needle 40, a stirring sleeve 50 and a pressing sleeve 60 coaxially arranged from the inside to the outside. The stirring needle 40, the stirring sleeve 50 and the pressing sleeve 60 can all be approximately cylindrical in appearance.

[0056] The method for simultaneously achieving welding and forming of columns on a plate according to an embodiment of the present invention comprises the following steps:

[0057] S1: Figure 1a and Figure 1b As shown, the original column 10 is placed on the plate 20. The original column 10 and the plate 20 are both made of metal, such as aluminum and aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, but not limited thereto. The outer diameter of the original column 10 is required to be no greater than the inner diameter of the compression sleeve 60.

[0058] S2: Figure 2 As shown, the non-rotating clamping sleeve 60 is sleeved on the outer periphery of the original column 10 and axially pressed on the plate body 20, so that the rotating stirring needle 40 and the rotating stirring sleeve 50 are axially pressed on the end surface of the original column 10. In this step S2, the clamping sleeve 60 presses the plate body 20 to prevent the plate body 20 from moving. The clamping sleeve 60 is sleeved on the outer periphery of the original column 10 so that the stirring needle 40 and the stirring sleeve 50 move forward axially synchronously so that the stirring end surface (such as Figure 2 The lower end surface of the stirring needle 40) and the stirring end surface of the stirring sleeve 50 (such as Figure 2 The lower end annular surface of the middle stirring sleeve 50 is pressed against the end surface of the original column 10.

[0059] S3: Figure 3a and Figure 3b , Figure 3c and Figure 3dAs shown, the rotating stirring needle 40 and the rotating stirring sleeve 50 are moved in opposite directions along the axial direction to break the interface between the original column 10 and the plate body 20, and the column-plate welding is completed. In this step S3, the clamping sleeve 60 remains stationary and is still pressed against the plate body 20; the stirring needle 40 and the stirring sleeve 50 are rotated to press against the original column 10 and move in the opposite direction axially, so that the stirring needle 40 or the stirring sleeve 50 enters the plate body 20 to break the interface between the original column 10 and the plate body 20. Reliable column-plate welding can be achieved by moving the stirring needle 40 and the stirring sleeve 50 back and forth once each. For example, Figure 3a , firstly, the stirring needle 40 advances axially into the plate body 20 and the stirring sleeve 50 retreats axially, breaking the interface between the original column 10 and the plate body 20 for the first time, thus realizing the first connection between the column and the plate; Figure 3b As shown, the stirring sleeve 50 then moves forward axially into the plate body 20 and the stirring needle 40 moves back axially, breaking the outer annular interface between the original column 10 and the plate body 20 for the second time, thereby achieving a reconnection between the column and the plate; thus, through two column-plate connections, a high-strength and high-efficiency complete connection between the column and the plate is achieved. For another example, Figure 3c As shown, the stirring sleeve 50 first moves forward axially into the plate body 20 and the stirring needle 40 retreats axially, breaking the interface of the outer annular position between the original column 10 and the plate body 20 for the first time, thus realizing the first connection between the column and the plate; Figure 3d As shown, the stirring needle 40 then moves forward axially into the plate body 20 and the stirring sleeve 50 retreats axially, breaking the interface at the middle position between the original column 10 and the plate body 20 for the second time, thereby achieving reconnection between the column and the plate; thus, through two column-plate connections, a high-strength and high-efficiency complete connection of the column and the plate is achieved.

[0060] S4: After the column plate welding is completed, the rotating stirring needle 40 and the rotating stirring sleeve 50 are moved in opposite directions along the axial direction to form the required column 30, such as Figure 4a and Figure 4b As shown. In step S4, the pressing sleeve 60 remains stationary and is still pressed against the plate 20; the stirring needle 40 and the stirring sleeve 50 are moved in the opposite axial direction until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stop at their respective predetermined final stop positions, wherein the predetermined final stop positions of the stirring needle 40 and the stirring sleeve 50 are determined by the different shapes and axial dimensions of the column 30, so that columns 30 of different shapes and heights can be formed according to different needs of the column 30. For example, a solid column (such as Figure 4a ) and a column with holes (as shown Figure 4b For example, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is aligned with the predetermined final stop position of the stirring end surface of the stirring sleeve 50, and as shown in FIG. Figure 4aAs shown, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve 50, the formed column 30 is a solid column; Figure 4b As shown, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve 50, the column 30 is a column with holes.

[0061] S5: Figure 5a and Figure 5b As shown, the stir friction backfill spot welding tool is separated from the plate 20 and the column 30, the welding and forming of the column 30 on the plate is completed, and a welded forming product of the column on the plate is obtained, such as Figure 6a and Figure 6b shown.

[0062] The method for simultaneously realizing the welding and forming of the column on the plate in the above embodiment uses a stir friction backfill spot welding tool to simultaneously weld the original column 10 on the plate 20 and form the column 30 into columns of different shapes and heights, wherein the principle of stir friction backfill spot welding is used to realize the connection of the column plate and the forming of the column 30, and columns 30 of different shapes and axial sizes can be obtained as needed, such as solid columns or columns with holes. This method can not only realize high-strength and high-efficiency connection and forming of the column plate, but also can obtain columns 30 of different shapes and axial sizes through a single original column 10, without the need for additional machining, thereby reducing production costs.

[0063] In some embodiments, the outer diameter of the original column 10 is larger than the outer diameter of the stirring needle 40 and smaller than the inner diameter of the compression sleeve 60. This is conducive to ensuring the connection between the column 30 and the plate 20 and the molding of the column 30.

[0064] In some embodiments, in step S2 to step S4, the stirring needle 40 and the stirring sleeve 50 rotate at the same speed or at a differential speed, and the stirring needle 40 and the stirring sleeve 50 rotate in the same direction or in opposite directions, which can be selected according to actual needs.

[0065] In some embodiments, in step S3 or / and step S4, the axial moving speed of the stirring needle 40 and the axial moving speed of the stirring sleeve 50 satisfy the following relationship:

[0066] V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ;

[0067] Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle 40 and the axial moving speed of the stirring sleeve 50, respectively, 搅拌套 and S 搅拌针They are respectively the annular area of ​​the stirring end surface of the stirring sleeve 50 and the circular area of ​​the stirring end surface of the stirring needle 40. This is conducive to ensuring the connection between the column 30 and the plate 20 and the molding of the column 30.

[0068] In some embodiments, step S3 includes a first welding motion mode and / or a second welding motion mode.

[0069] Among them, the first welding motion mode is: first, as Figure 3a As shown, the stirring needle 40 moves forward in the axial direction, and the stirring sleeve 50 moves back in the axial direction until the stirring needle 40 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20; then, as shown in Figure 3b As shown, the stirring needle 40 retreats axially, while the stirring sleeve 50 advances axially until the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20, thereby completing the column-plate welding, with high column-plate connection strength and high column-plate welding efficiency.

[0070] The second welding motion mode is: first, Figure 3c As shown, the stirring needle 40 retreats axially, while the stirring sleeve 50 advances axially until the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20; then, as shown in Figure 3d As shown, the stirring needle 40 advances axially, and the stirring sleeve 50 retreats axially until the stirring needle 40 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20, thereby completing the column-plate welding, the column-plate connection strength is high, and the column-plate welding efficiency is high.

[0071] In some embodiments, step S4 includes a first forming motion mode and / or a second forming motion mode.

[0072] The first molding motion mode is: first, the stirring needle 40 advances in the axial direction, while the stirring sleeve 50 retreats in the axial direction; then, the stirring needle 40 retreats in the axial direction, while the stirring sleeve 50 advances in the axial direction, until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stay at their respective predetermined final stop positions, thereby molding the desired column 30. Alternatively, the first molding motion mode is: the stirring needle 40 advances in the axial direction, while the stirring sleeve 50 retreats in the axial direction, until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stay at their respective predetermined final stop positions, thereby molding the desired column 30.

[0073] The second molding motion mode is: first, the stirring sleeve 50 advances in the axial direction, while the stirring needle 40 retreats in the axial direction; then, the stirring sleeve 50 retreats in the axial direction, while the stirring needle 40 advances in the axial direction, until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stay at their respective predetermined final stop positions, thereby molding the desired column 30. Alternatively, the second molding motion mode is: the stirring sleeve 50 advances in the axial direction, while the stirring needle 40 retreats in the axial direction, until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stay at their respective predetermined final stop positions, thereby molding the desired column 30.

[0074] Specifically, in step S4 , the predetermined final stop position of the stirring end surface of the stirring needle 40 and the predetermined final stop position of the stirring end surface of the stirring sleeve 50 are determined by the shape and axial dimension of the column 30 .

[0075] The predetermined final stop position of the stirring end surface of the stirring needle 40 and the predetermined final stop position of the stirring end surface of the stirring sleeve 50 may be flush or not.

[0076] The predetermined final stop position of the stirring end surface of the stirring needle 40 and the predetermined final stop position of the stirring end surface of the stirring sleeve 50 can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve 50 (such as Figure 4a As shown), the cylinder 30 is a solid cylinder; when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve 50 (as shown Figure 4b As shown), the column 30 is a column with holes.

[0077] In addition, it should be noted that the shapes of the column 30 formed by the two welding motion modes in step S3 and the two forming actions in step S4 can be combined in pairs, that is, step S3 can use the first welding motion mode and the second welding motion mode to obtain a column with holes or a column without holes (solid column).

[0078] In summary, the method for simultaneously realizing the welding and forming of the column on the plate in the embodiment of the present invention uses a stir friction backfill spot welding tool to simultaneously weld the original column 10 on the plate 20 and form it into a column 30 of different shapes and heights, wherein the principle of stir friction backfill spot welding is used to realize the connection of the column plate and realize the forming of the column 30, and the column 30 of different shapes and axial sizes can be obtained as needed, such as a solid column or a column with holes. This method can not only realize the high-strength and high-efficiency connection and forming of the column plate, but also can obtain the column 30 of different shapes and axial sizes through a single original column 10, without the need for additional machining, thereby reducing the production cost.

[0079] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for simultaneously welding and forming a column on a plate, characterized in that: The original column is welded on the plate body at the same time by using a stir friction backfill spot welding tool to form columns of different shapes and heights.

2. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: The friction stir backfill spot welding tool comprises a stirring needle, a stirring sleeve and a pressing sleeve coaxially arranged from inside to outside; The method comprises the following steps: S1: placing the original column on the plate; S2: The non-rotating pressing sleeve is sleeved on the outer circumference of the original column and axially pressed on the plate body, so that the rotating stirring needle and the rotating stirring sleeve are axially pressed on the end surface of the original column; S3: making the rotating stirring needle and the rotating stirring sleeve move in opposite directions along the axial direction to break the interface between the original column and the plate body, thereby completing the column-plate welding; S4: After the column plate welding is completed, the rotating stirring needle and the rotating stirring sleeve are moved in opposite directions along the axial direction to form the required column; S5: Separate the friction stir backfill spot welding tool from the plate and the column.

3. The method for simultaneously welding and forming columns on a plate according to claim 2, characterized in that: The outer diameter of the original column is larger than the outer diameter of the stirring needle and smaller than the inner diameter of the compression sleeve.

4. The method for simultaneously welding and forming columns on a plate according to claim 2, characterized in that: In step S2 to step S4, the stirring needle and the stirring sleeve rotate at the same speed or at a differential speed, and the stirring needle and the stirring sleeve rotate in the same direction or in opposite directions.

5. The method for simultaneously welding and forming columns on a plate according to claim 2, characterized in that: In step S3 and / or step S4, the axial moving speed of the stirring needle and the axial moving speed of the stirring sleeve satisfy the following relationship: V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ; Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle and the axial moving speed of the stirring sleeve, respectively. 搅拌套 and S 搅拌针 They are respectively the area of ​​the annular ring of the stirring end surface of the stirring sleeve and the circular area of ​​the stirring end surface of the stirring needle.

6. The method for simultaneously welding and forming columns on a plate according to claim 2, characterized in that: Step S3 includes a first welding motion mode and / or a second welding motion mode; The first welding motion mode is as follows: first, the stirring needle moves forward in the axial direction, and the stirring sleeve moves back in the axial direction until the stirring needle enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle moves back in the axial direction, and the stirring sleeve moves forward in the axial direction until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding; The second welding movement mode is: first, the stirring needle retracts axially, and at the same time the stirring sleeve advances axially until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle advances axially, and at the same time the stirring sleeve retracts axially, until the stirring needle enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding.

7. The method for simultaneously welding and forming columns on a plate according to claim 2, characterized in that: Step S4 includes a first forming motion mode and / or a second forming motion mode; Wherein, the first forming motion mode is: first, the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction; then, the stirring needle retreats in the axial direction, and the stirring sleeve advances in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the desired column; or, the first forming motion mode is: the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the desired column; The second molding motion mode is: first, the stirring sleeve advances axially, and the stirring needle retreats axially; then, the stirring sleeve retreats axially, and the stirring needle advances axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column; or the second molding motion mode is: the stirring sleeve advances axially, and the stirring needle retreats axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column.

8. The method for simultaneously welding and forming columns on a plate according to claim 7, characterized in that: In step S4, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve are determined by the shape and axial size of the cylinder.

9. The method for simultaneously welding and forming columns on a plate according to claim 7, characterized in that: The predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve may be flush or not.

10. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: The predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a solid column; when the predetermined final stop position of the stirring end surface of the stirring needle is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a column with holes.

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